Railway safety device.



J. T. ANDREW.

RAILWAY SAFETY DEVICE.

APPLICATION FILED JAN. 3, 1911.

Patented'Mar. 14, 1911.

w vweweo UNITED STATES PAT N F E.

minis r. snnnnw, or newcomer, Annals.

Specification 01.1mm rams BATLWA'! SAFE 'BY DEVICE.

Patented Mar. 14, 1911.

ori inal q manon and November 18, 1010, Serial in; m. mvmnf and am application file.

1 a January 3, 1911. Serial m. 800,822. i

To all whom it may concern:

Be it known that I, Janus T. ANDREW, a citizen of the United States, residing at Montgomery, in the county of Montgomery and State of Alabama, have invented certain new and useful Improvements in Railwa'y Safet clare the ollowing to be a. full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. i

This invention relates to railway safety.

devices. and has for its object to improve the invention disclosed in my prior Patent- '#-S)41,222, issued November 23,1909, and

is a division of my application #593,095, h m-ember 18, 1910, railway safety appliances.

To this end, the invention consists in the novel details of construction and combinations of parts more fully hereinafter disclosed and particularly pointed out in the claims.

Referring to the accompanyin drawings forming a part of this speci cation, in

which like. numerals refer to like parts in all the views :--Figure l is a longitudinal sectional view of the truck of a locomotive,

the bolts 18. as shown. Upon taking out the with my improvements attached thereto; F 1g. 2 1s a sectional detail View of certain of the portions shown 1n Flg. 1; and, Fig.

3 is an elevational view of a hanger for the safety rollers detached from the truck.

1 indicates the track, 2 the wheels of a locomotive, 3 the axles and 4 one of the side bars of the. truck. On'the axles 3 I pro vide inside of the wheels 2 at each end hangers 5,-preferably of the general shape shown in Fig.- 3. These hangers are provided with orifices 6 through which pass the axles 7 of the safety rollers 8, which are located slightly above track 1, as shown. Extending from end to end of the truck underneath the axles 3, is'a continuous beam 10, which-is provided with U-shaped 'sup porting brackets 11, passing down under neath and around the axle 7.

The hangers 5 are provided with cutaway 13 an with cutaway places 14 to accommodate the lubricating portion of the join-- nalbox. Passing underneath the journal boxes are. plates 10, fitting in slots 17 in the hangers, and which are secured in place by Devices; and I do hereby de-' Aolaces 12'to accommodate the brasses' the engine isldera'iled, and the'strain isbrought upon the rollers '8, serve to mm mit the strain from the axles 7 to the beam 10, which in turn transmits said strain 'td-t h'e main axles 3 of the truck, as will-be readily understood. In the same waffthis is transmitted through the plates] 16*arid 22: 40-tothe axles 3, as will be clear from 1g.1. mi

The extreme forward and rear safety rollers 25 are provided with a conical bore- .26, as illustrated in Fig. 2, and also with a circumferential groove 27, in which fits a segment of a ring 28, Fig. 1, attached -to the spring-pressed rod 29, controlling the. air valve 30, and connected by the pipe 31 to the air-brakesystem.

The operation of my invention is as fol-. lows :--As clearly disclosed in my former patent above, when the engine leaves. the track, the safety rollers 25 on one side of the truck receive theweight of'the engine and truck on onerail, while wheels such as 3-5 on the other side oft-he engine receive the Weight of said engine and truck on the other rail. In the present invention, however, When'the forward or .rear rollers 25 'come' in contact with the rail, the said rollers will be lifted, owing to-their conical bore, and

will thereupon raise the spring-pressed rod 5.

29, to o erate the air valveBO, and to uto maticall y apply the brakes to the train; In all cases the weight which comes upon the, safety rollers .8 and 25 is transmitted through the axles 7 to the longitudinal beams 10, which in turn transmit-the strain to the main axles 3 of the truck. A portion of this strain is also transmitted throu h the plates 16 and box 40 to the;,iniain ax es 3, as above indicated.

' It is obvious that those skilled: the art a may vary the details of construction and" the arrangement of parts without-departing from the spirit ofmy invention, and, therefore, I donoh wish to be limitefd to such features as .di's'closed,"except as, n iaybe rc-' I 110 quired by the claims.

t; l ,5 r r What I claim is 1. In a railway safety appliance provided with a train air pipe the combination of a safety wheel having a tapered bore; a safety axle on which said wheel is mounted; and connections between said wheel and pipe adapted to be operated when said safety wheel is raised substantially'as described.

2. In a. railway safety appliance provided with a train air pipe the combination of a safety wheel having a tapered bore; a safety axle on which said wheel is mounted; a hanger through which said axle passes; and connections comprising a fluid controlling valve between said wheel and )ipe adapted to be operated when said sa ety wheel is raised, substantially as described.

In a railway safety appliance the combination of a truck provided with a main axle; a hanger supported from said axle; a safety axle passing through said han er; a safety wheel provided with a tapere bore and a grooved circumference mounted on said safety axle; a spring controlled rod having: a member fitting the groove in said safety wheel; and a.fiu1d contr0lling valve adapted to be operated by said rod, sub stantially as described.

In testimony whereof, I affix my signature, in presence of two witnesses.

JAMES '1. ANDREW.

Witnesses:

V. H. HUBBI D, CI-IELLY B. BAUPIN. 

